Ethernet to RS-232/485 Gateway

Transcription

1 Ethernet to RS-232/485 Gateway (Mode: IP-S) Feature: Operation voltage : DC 7V ~ 20V. RS232 Interface Meets or Exceeds TIA/EIA-232-F and ITU Recommendation V.28 Interface : ±12V levels compatibility. Data rate : 1200 bps up to bps Characters : 5, 6, 7, 8 Parity : None, Even, Odd Stop bits : 1, 2 Control signals : TxD, RxD, GND RS422/RS485 Interface Meet the requirement of the EIA/TIA wire signals (HDX mode) : RX+/D+,RX-/D-,GND 4-wire signals (FDX mode) : TX+,TX-,RX+,RX-,GND Support terminal resistor for TX and RX. Up to connect 256 devices on the bus. Maximum bit rate up to 115K bps. Bus protection: ±30KV, IEC , Contact/Air Discharge. ±30KV, IEC , EFT(5/50ns). ±30KV, IEC , Surge(8/20us). Ethernet Interface Built-in 1.5KV magnetic isolation. Ethernet Interface : 10Base-T, 100Base-TX Ethernet Speed/Duplex : Auto-negotiation 10/100Mbps, Full/Half duplex Protocols Supported : ARP, IP, ICMP,UDP, TCP, DHCP, TFTP, HTTP. Network Services : TCP Server, TCP Client, Web Control. Auto-MDIX : Yes Build-in web server setting page for parameter by user. 1

2 Maximum connection device in server mode : 8. Support all operation system, don t need any driver. Cross domain parameter setting utility for windows XP/VISTA/windows 7. Support Virtual Serial Port (VSP) utility for simulate RS232 COM port. Support modbus ASCII/RTU protocol. Support modbus TCP ptotocol. Support modbus RTU maximum baud rate : Function Description: RS-232/RS-485 Switch RS-485 Terminal Block Power input RS-485 Terminator DC 7~20V Restart button LED x 3 Ethernet RS-232 2

3 1. DB9 male : RS232 connector. 2. RJ45 : TCPIP Ethernet connector. 3. RS422/RS485 terminal resistor: Short is enabled, open is disabled (2.54mm). 4. RS232/RS485 mode switch. 3

4 5. RS422/RS485 2-wires(HDX)/4-wires(FDX) connector. VCC-GND : DC 7~20V input. HDX signals : RX+/D+,RX-/D-,GND. FDX signals : TX+,TX-,RX+,RX-,GND. The mode setting by DSM utility option. 6. DC power connector : DC 7~20V input (Φ2.0mm). 7. LED indicator : Red-Power, Orange-Ready, Green-Link. 8. Reset key : Reset module. Default setting: The module default IP address is , this module build-in a homepage for setting, so user can change internal parameter setting by browser. Quick start: 1. Connect RJ45 to Ethernet. 2. Select RS232 or RS422/RS485 mode. 3. Connect RS232 DB9 or RS422/RS485 2/4-wires bus. 4. Connect DC power input. 5. Check LED indicator. User can use browser and entry the URL( for setting. About the web server setting page as below: 4

5 User can change any parameter, once the parameter was finished, user can press the Apply button, and new parameter can be saved to module simultaneously the module will reboot. The main page mainly provides two functions, (1) Apply: to update the configuration value on the device server(s). (2) Reset: to reset the configuration value to the factory default settings. Notice: The Firmware Update button doesn t press. Environment setting: The module factory default IP address , so, when in use, please note that if there are other devices that are located on the same IP address. Setp 1: First check IP address, in window XP item Start Run. 5

6 Entry ping command, and press OK. When the console window display as below: When you see the Request timed out message, said there is no device IP: address, this screen will then automatically shut down. Step 2: Verify that the domain is the same as the IP address is , so the domain is in the x where, if the first three digits of your computer not the same with this domain, you can not link to this mode group. You can select Start Run My computer Network Neighborhood View Network Connections 6

7 If that is not the same domain, use a fixed IP address of the IP way to x, Gateway IP: Step 3: Recognition and computer wiring is correct, if your computer has through the Hub is connected to this module, then you can use the network cable to the general, if the computer is directly connected with the module, then you must use a dedicated network handshake line before the connection is successful. 7

8 Step 4: If the domain is configured correctly success or wiring, you can use the "ping " in the way of a successful connection recognized. Then you can use the browser to open the setup screen. 8

9 Parameter Setting: This module is divided into two parts parameter: Serial Port setting Network setting When you set is complete, simply press the "Apply" button, if the "Enable Reboot" are ticked, then this module will reboot, reboot time because flowers to 5 to 10 seconds, so you may see the screen can not display the error message. At this point you re-enter as long as the web site again and press "Enter" key, the screen will re-appear. 9

10 Serial Port setting: Data Baud Rate : RS232 bit rate, the range from Data Bit : The number of data bits transmitted, the range from and 8 bits Data Parity : Transmission of the parity bit check method,the type are Odd Even and None Stop Bit : Number of stop bits,the type are and 2 bits. Flow Control: Flow control method, the type are Xon/Xoff Hardware and None. Network setting: Enable DHCP : Enable DHCP function. IP Address : Static IP address,use IPv4 define Subnet Mask : Mask address,normal setting is Gateway : Gateway address,normal setting is xxx.xxx.xxx.254 DNS server : DNS address, Can point to any one DNS server, we are the factory default value is pointing to Taiwan Telecom's DNS server. Connection Type : TCP and UDP is divided into two types, their advantages and disadvantages are as follows: Protocol Advantages TCP UDP Reliable transmission, the program can be omitted and reliable mechanism disadvantages Transmission speed slower. Large transmission capacity, rapid Unreliable, the program may need to provide a reliable mechanism for self. Transmit Timer : Data packets sent between the serial interval. Server/Client : This machine type, the default value is Server. Listening Port : Multiple applications in the corresponding port will address, in which the range of 0 to 1023 is known to the general code used by the so-called (Well-Known Ports), for example: Port 21 is used for FTP, Port 80 is for Http used, as the dynamic port (Dynamic Ports) to users to decide on opening up, ranging from 1024 to Destination IP : When this module is set to Client, enter the IP address of the remote host server. Destination Port : When this module is set to Client, enter the remote host server port address. Enabled Reboot : Start Module reboot. Apply : Confirm the setup is complete. Reset : Reserved. Firmware Upgrade : Reserved. 10

11 Test Method Description: In Windows, the software has built-in Hyper Terminal, but less in the maintenance of the software, so there are many problems, users are recommended to use Tera Term software to replace the Super Terminal, this is free software, download the following address: Or use the downloadable Google search URL. First of all be determined in accordance with the environment set the domain PC and module are the same, then the test board and module ready and connected with the PC's COM port and also connected to the Ethernet network. Internet 網路線 網路線 DB 9 Cable RJ45 主機與模組 When the connections are completed, then the first open Tera Term from the first screen, select the Serial port address. COM port after setting the parameters, in the Setup-> Serial port open parameter setting screen, the set of the RS232 module parameters must be the same, otherwise it will not connect. 11

12 Tera Term then open a second screen, File-> New connection, select the TCPIP host address. When TCPIP is also set to complete, Tera Term window, there were two RS232 and TCPIP. Transfer Mode RS232-> TCPIP At this point you have to do RS232 screen, press a different key, in the meantime will appear on the screen under TCPIP. 12

13 If at this time the wiring RS232 and PC separately, you are still in the RS232 screen, press a different key, this time will not you just press the TCPIP any character. Transfer Mode TCPIP-> RS232 To transfer data through the TCPIP to RS232 picture of the screen, please enter the text in the TCPIP screen, be sure to press the Enter key, then just enter the text can send out. First look at the screen display settings, select Setup-> Terminal. 13

14 When the Terminal setup screen appears, in the New-line-> Receive select CR + LF Two Terminals are set to do the same, after TCPIP enter a text screen, press the Enter Key. 14

15 Server mode instructions: Use this mode is set for each Device Server-side, this time the initiative to send or read data from a remote Client host launched through polling (Polling) way, one by one on each Device send command, in principle, each Device must be set to a fixed IP mode, so the remote Client only way to query one by one. Server Server Server Server Client Server Server Server Server Client mode instruction: Use this mode is set for each device client-side, this time the initiative to send or read data from the client-side initiated automatically every time client requested connection, once the connection is successful, client will automatically send IP and MAC address, so that the remote server know which one client has the connection is successful, the device can be configured for each variable or fixed IP mode. Once the connection is complete, client can take the initiative to send or read data to the server. 15

16 Client Client Client Client Server Client Client Client Client Set as follows: Using a fixed IP or floating IP can select client mode and IP port pointing to a remote location and server location. 16

17 Client mode Demo software: First, open the Server-side software to start listening for connections coming from the Client-side requirements, when you press the Receive button, the software started listening. When the software receives client connection requests and respond to the end of the connection, it will show a successful connection message, and will show the client-side IP address and MAC address. Open Tera Term screen for COM port 17

18 At this point in the COM port screen, enter any character, all will be immediately displayed in the software screen on the Server-side. If server want to cancel the connection with the Client-side, please enter the capital of the 'Q' can be. 18

19 Module connection without PC: One server can support 8 client module. Server mode setting: 1. Turn-off DHCP. 2. Setting server mode and fixed IP and port. 3. Setting RS232 parameters. 19

20 Client mode setting: 1. Turn-off DHCP. 2. Setting this module fixed IP and port. 3. Setting client mode and server module IP and port. 4. Setting RS232 parameter. 20

21 Modbus protocol: When your system is modbus protocol, you can setup this module entry modbus mode by DSM up utility. Modbus RTU/TCP option: This mean is gerneral serial mode as example : modbus ASCII. This mean is modbus RTU mode and maximum baud rate This mean is general TCPIP mode. This mean is modbus TCP mode. Modbus RTU vs General TCPIP RTU(Send)/TCPIP(Receive) 21

22 RTU(Receive)/TCPIP(Send) Modbus RTU vs Modbus TCP RTU(Send without CRC)/TCPIP(Receive) 22

23 RTU(Receive)/TCPIP(Send with CRC) 23